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Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver Up to 10% Off w/ Free S&H — 6 models

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47811
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47811
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47811
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47811
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Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47811
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
2 of 11 images
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47811
3 of 11 images
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47811
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47811
4 of 11 images
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47811
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
5 of 11 images
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
6 of 11 images
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
7 of 11 images
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
8 of 11 images
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
9 of 11 images
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
10 of 11 images
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810
11 of 11 images
Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810

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Questions & Answers
Can you use this upper with a suppressor? Expert Answer

If you have a suppressor that matches the threads of the barrel and caliber you could use it with the Maxim Defense Industries MDX 505 Mil-Spec URG Upper Receiver.

by Hunter, Gear Expert, February 8, 2022
See 1 More Answer
Does the 7.62 upper come with a magazine? Some utube videos say it come with, but no mention is made in products page. Expert Answer

This Maxim Defense Industries MDX 505 Mil-Spec URG Upper Receiver does not come with a magazine.

by Hunter, Gear Expert, February 7, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Maxim Defense 5.56 Upper by MOE MAGA, Verified Owner, August 1, 2020
Awesome upper, rings steel at 100 yards all day. I had ZERO malfunctions using in semi auto and in Echo Mode (Fostech echo sport). I used with an H1 buffer, I may try out an H2 just to slow it down some. I’m buying another in 7.62x39 to build another...
Read More...
4/6 found this helpful
Helpful Positive Review
7.62x39 The Easy Way by Stone, Verified Owner, November 1, 2020
I wanted to add a 7.62x39 to my AR lineup and I went through my parts bin to see what I had and started thinking about what I would need to buy or change. A few of my AR friends were pretty discouraging about how they had tried it and had very unrel...
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7/8 found this helpful
Helpful Negative Review
556 upper receiver won't cycle the 223 cartridge. by J, Verified Owner, October 14, 2024
There is an issue with cycling 223 cartridge to the 556 upper receiver. I was able to isolate the cause. I sent it for repair in maxim defense, but after they replaced the barrel, gasblock, the issue is still there. The last reply they gave me are as...
Read More...
1/2 found this helpful
Most Recent Reviews
Fun Bang Bang by Nic, Verified Owner, March 29, 2026
Slapped this upper on an sbr lower grabbed some super and subs and hit the range. Both lancer and magpul mags and it ate everything. But right 250 rounds not a single issue loving it so far. Can't wait for more range time
Most Recent Reviews
Barrel out of spec with upper receiver by Ms SBR, Verified Owner, January 11, 2025
This barrel is out of spec with the upper receiver which is causing the blot carrier group to get jammed into the barrel…. I’ve contacted Maximum Defense to get an update on this issue…. Waiting to hear back
1/2 found this helpful
Most Recent Reviews
Fantastic 7.62x39 upper by Glenn Z, Verified Owner, February 3, 2024
This is the second Maxim Defense PDX upper that I purchased. Both are 7.62x39. I mounted it on an Aero precision lower with a trigger tech trigger, and run the JP H2 buffer system. It runs flawlessly, I use 20 or 28 round Duramag magazines. Never a ...
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Read All 8 Reviews
6 Models Available
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ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver

**The Maxim PDX U.R.G ships with your choice of a Standard Mil-Spec BCG to be used with most common M4 compatible lowers, or a PDX/SCW compatible BCG buffer and Spring. image

The Maxim Defense PDX™ U.R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec lower receiver. With the PDX™ U.R.G, you dominate close-quarter encounters and achieve maximum energy on target without sacrificing accuracy at distance. At just 14” in overall length and a 5.5” barrel, the PDX™ U.R.G. is the ultimate choice for when concealment and personal defense is non-negotiable.

The PDX™ U.R.G. is also equipped with Maxim’s HATEBRAKE™ Muzzle Booster. This patent-pending device significantly reduces recoil, decreases the flash signature, pushes gasses and concussion waves downrange away from the operator improving overall execution. The PDX U.R.G. uses a Direct Impingement system.

Specifications for Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver:

Manufacturer: Maxim Defense Industries
Overall Length: 14 in
Barrel Length: 5.5 in
Handguard Type: Free-Float
Muzzle Device: Hatebrake
Finish: Type III Hardcoat Anodized
Fabric/Material: 6AL-4V Titanium, 6061 Aluminum, 7075 Aluminum, 17-4 Stainless Steel
Gun Rail: Picatinny
Gun Type: Rifle
Gun Make: AR Platform
Gun Model: AR-15
Weight: 4 lb
Magazine Included: No
Condition: New
Additional Features: Standart Mil-Spec
Country of Origin: USA

Features of Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver:

  • HATEBRAKE installed under handguard
  • M-slot compatible handguard
  • Military-grade materials 6Al-4V Titanium, 17-4 Stainless Steel, 7075 and 6061 Aluminum
  • HK height rail for a more rigid upper receiver
  • Maxim Mil-Spec BCG or PDX/SCW compatible BCG
  • Optimized Personal Defense Weapon Upper
  • Increased reliability due to included HATEBRAKE
  • Optimized low flash
  • Designed to work with any Mil-Spec lower receiver

Package Contents:

  • Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver
  • Maxim Defense Industries MDX 505 Mil-Spec URG Upper Receiver
  • HATEBRAKE installed under handguard
  • M-slot compatible handguard
  • Military grade materials 6Al-4V Titanium 17-4 Stainless Steel 7075 and 6061 Aluminum
  • HK height rail for a more rigid upper receiver
  • Maxim Mil-Spec BCG

What firearm models does the manufacturer say Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver is compatible with?

The manufacturer says that Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver is compatible with AR-15

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver Orderable Models

List of Orderable Models

  • Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47811 , MPN: MXM-47811 , UPC: 680017478117 , Code: MDI-URC-GHGF-MXM-47811
  • Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 7.62x39, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47810 , MPN: MXM-47810 , UPC: 680017478100 , Code: MDI-URC-GHGF-MXM-47810
  • Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread 5.5in Barrel, Arid Earth, MXM-47812 , MPN: MXM-47812 , UPC: 680017478124 , Code: MDI-URC-GHGF-MXM-47812
  • Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 300 BLK, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Black, MXM-47827 , MPN: MXM-47827 , UPC: 680017478278 , Code: MDI-URC-GHGF-MXM-47827
  • Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 5.56 NATO, Hate Brake, 1/2-28 Thread, 5.5in Barrel, Black, MXM-47813 , MPN: MXM-47813 , UPC: 680017478131 , Code: MDI-URC-GHGF-MXM-47813
  • Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver, 300 BLK, Hate Brake, 5/8-24 Thread, 5.5in Barrel, Arid Earth, MXM-47826 , MPN: MXM-47826 , UPC: 680017478261 , Code: MDI-URC-GHGF-MXM-47826
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